Cherry Cultivar Breeding for Self-Fertility and Rain Crack Resistance

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Solution Overview

Problem

Existing cherry tree cultivars face challenges in precocious fruiting, self-fertility, resistance to rain-induced cracking, and moderate resistance to bacterial canker, with limited commercial success in specific growing conditions.

Innovation Solution

A new cherry tree variety, 'V690630', developed through controlled cross-pollination of 'Van' and 'Stella', exhibits precocious fruiting, self-fertility, good resistance to rain-induced cracking, and moderate resistance to bacterial canker, with distinct fruit characteristics and growth habits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing cherry tree cultivars are grown under normal horticultural practices, then fruit production is achieved, but resistance to rain-induced cracking and bacterial canker remains insufficient

Engineering Contradiction:

Improveresistance to rain-induced crackingVSAvoidsusceptibility to cracking and disease

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by selecting and breeding cherry trees with specific genetic parameters that confer resistance to rain-induced cracking and bacterial canker. The new variety 'V690630' exhibits modified physiological and structural parameters including thicker skin (0.3-0.5 cm), altered fruit composition (Brix 16-20, acidity 0.6-1.0), and enhanced disease resistance through controlled cross-pollination between parent varieties 'Van' and 'Stella'

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite materials by combining desirable traits from two parent varieties through controlled cross-pollination. The hybrid variety 'V690630' integrates the self-fertile characteristic from one parent with the precocious fruiting habit and disease resistance from the other, creating a composite genetic structure that simultaneously addresses multiple shortcomings of parent varieties

Inventive Principle:

Principle #40Composite materials

2Productivity

If existing cherry tree cultivars are bred for precocious fruiting, then earlier harvest is achieved, but self-fertility and disease resistance may be compromised

Engineering Contradiction:

Improveprecocious fruitingVSAvoidself-fertility and disease resistance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies merging by combining three critical traits—precocious fruiting, self-fertility, and disease resistance—into a single hybrid variety. Through controlled cross-pollination, the patent merges the precocious fruiting habit from one parent with self-fertility and enhanced disease resistance from the other parent, achieving a unified variety that simultaneously expresses all three desirable characteristics

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If controlled cross-pollination is used to develop new varieties, then improved fruit characteristics are achieved, but breeding time and complexity increase

Engineering Contradiction:

Improvefruit characteristicsVSAvoidbreeding process complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by conducting controlled cross-pollination between specifically selected parent varieties ('Van' and 'Stella') that already possess complementary desirable traits. This preliminary selection and crossing approach streamlines the breeding process by pre-establishing parent lines with known characteristics, reducing the complexity of subsequent selection and evaluation steps while achieving predictable fruit quality outcomes

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20260033411P1Cherry Tree Named 'V690630'

Publication Date: 2026.01.29 UNIVERSITY OF GUELPH

AI summary

A new cherry tree particularly distinguished black-red fruit with a kidney to flat-round shape, self-fertility and less susceptible to rain crack, is disclosed.